[GC427]

I checked the voltage at the alternator positive post to ground with the engine not running. It's 12.7 volts, the same as the battery across the positive and negative posts. My Cobra is SP02047. Like SP03033, it has the 80 amp fuse between the two posts as you described. I'm going to check that fuse now to see if it's blown. I have Blas' wiring diagram, which is very helpful. Yes, on a long ride is where I had the problem. The car ran well until the battery finally did not have enough charge to keep the fuel pump going. I had the battery charged at a gas station and easily made it home. I drove about 550 miles before the battery output could not support the fuel pump. Going to check the fuse...